Gambit - Chess

Classic chess plus Fischer Random, Crazyhouse, Bughouse, Horde, and 3-D Star Trek chess — play a 5-level engine, pass-and-play, or online with a friend.

Gambit is chess — and five chess worlds beyond it. One clean board, every way to play.

GAME TYPES • Classic Chess — full rules: castling, en passant, promotion, draws. • Fischer Random (Chess960) — randomized back rank with generalized castling. • Open Borders (Horde) — 36 pawns storm a full army. • Turnabout (Crazyhouse) — capture a piece, then drop it back as your own. • Siamese (Bughouse) — two boards, captured pieces feed your partner. • Star Trek Tri-D — three-dimensional chess across seven boards.

WAYS TO PLAY • Computer — five difficulty levels, from a gentle start to a real fight. Moves are instant. • Pass-and-play — two players on one device. • Online — invite a friend with a link, or find a match automatically. Live clocks, resign and draw offers, and you can watch other live games.

MORE • Eight board themes. • Post-game analysis — an evaluation graph and move-quality marks. • A library of famous games to replay. • Optional cross-device game history with "Sign in with Knomee."

No account is required to play. Sign in only if you want your game history synced across devices.